| Impact ID | 3535 |
| Impact Type | Predation/Herbivory |
| Study Type | Anecdotal |
| Study Location | N/A |
| Impact Description | Alewife (Alosa pseudoharengus) likely has an even larger effect on native fish populations through predation of larvae than competition for food resources. |
| Reference | 24206 |
| Cost | |
| Location | Lake Michigan, USA |